Thirds to abraham s



(-No Model.)

D. J. DAVIDSON.

SIEVE GUT-OFF.

No. 536,985. PatentedApr. 2, 1895.

- screen A.

NITED STATES" PATENT FFIC.

DAVID J. DAVIDSON, OF PORTYHURON, MICHIGAN, ASSIGNOR OF TWO- THIRDS TO ABRAHAM S. MARTIN AND STEPHEN G. MARTIN, OF SAME PLACE.

SPECIFICATION forming part of Letters Patent No. 536,985, dated April 2, 1895. A lic tion filed October 31, 1893- Serial No. 489,618. (no modem Patented in Canada December 5, 1393,110. 44,824.

To all whom it may concern.-

Be it known that I, DAVID J (DAVIDSON, a citizen of the United States, residing at Port Huron, county of St. Clair, State of Michigan, have invented a certain new and useful Improvementin Sieve Gut-Offs, (for which I have obtained Letters Patent of the Dominion of Canada, dated December 5, 1893, No. 44,824 and I declare the following to be a full, clear, and exact description of the invention, such as willenable others skilled in the art to which it appertains to make and use the same, reference being had to the accompanying drawings, which form a part of this specification.

My inventionhas for its object a new and useful sieve cut off for grain cleaners and analogous purposes, and it consists of the construction, combination, and arrangement of devices and appliances hereinafter specified and claimed, and illustrated in the accompanying drawings, in which Figure 1 is a view in perspectiveillustratin g my invention. Fig. 2 is a plan view. Fig, 3 is a vertical cross section on the line 33 Fig. 2. V

The aim of my invention is tov provide a sieve cut off for grain cleaners, and other uses, whereby the stock passing through a screen point, and across the entire width of the device, and whereby the stock so cut off at any desired point may be separately discharged.

In carrying out my invention I employ a screen frame A of suitable size and dimensions with which is secured a suitable graded I prefer that this frame and screen should be rectangular, as shown. Be-

4 neath the screen frame and screen and spaced A it will be evident, form a closed bottom underneath the screen, the flooring being employed to close the spaces between the spouts.

An independent discharge orifice b and con-1 trolling slide, are provided, as will be seen, for each of the spouts a, and said orifices b are made to register with the open end of the corresponding spout, so that when the corresponding slide is open, the stock falling from a given spout will discharge through the open orifice.

I would have it understood that the screen is to be agitated by any suitable means. The agitating mechanism, not forming a feature of my present invention, is not shown herewith.

The agitation of the screen, it is evident, will cause the stock passing therethrough to be discharged into the box- B. The spouts and box preferably vibrate with the screen, the box, as shown, being secured to the screen frame by braces b The screen frame is shown supported above the spouts and flooring by means of posts A at each corner. The upper edges of the spouts are located even with the surface of the intervening flooring. The extension and opening of the spouts upward under the screen entirely across the width of the screen therebelow is anlimportant feature of my invention in connection with the other features above described.

What I claim as my invention is- In combination, an agitable screen frame having a graded screen secured thereto, aseries of inclining spouts opening upward their whole length, extending transversely across the full width of the screen therebeneath and spaced therefrom, a cut 0K box extendinglonspouts closed therehetween, substantially as [O gitudinally of the screen under thelower ends set forth. of the spouts, into which the several spouts In testimony whereof I sign this specificadischarge, said box constructed with distion in the presence of two witnesses.

5 charge orifices and means to control the dis- T charge therethrough, said orifices register- DAVID DAVIDDO)" ing' with the corresponding spouts, whereby Witnesses: when a given orifice is open, the correspond- GEO. R. DAVIDSON, ing spout will discharge therethrough, said ALBERT J AY DE YOE. 

